of loneliness. jon: right. people who are experiencing dementia might be embarrassed forgetting names and forgetting birthdays, and might limit social contact and feel lonely as a result. >> they might just feel lonely. they may be a little depressed for instance. people don't seem to like me. i feel quite isolated. is that depression? is that dementia? is it being lonely or feeling lonely that causes dementia? that study does not establish that it hints at possibility that feeling lonely could deprive people of belle being and even memory and being associated with dementia and argues for tools like skype. can skype help people? can online forums help them? we should certainly learn from this to be much more involved if we can be with our loved ones because those who feel lonely may be at an increased risk for dementia. jon: i've seen it in my own family. it is saddest thing when person otherwise perfectly healthy doesn't have the mind they used to. quick tips how people can help prevent dementia if